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Megator Rotary Lobe Pump Details and Applications

Learn about the technical specifications and versatile applications of Megator Rotary Lobe Pumps in various industries handling high viscosity, corrosive, and shear-sensitive fluids efficiently.

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Megator Rotary Lobe Pump Details and Applications

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  1. Rotary Lobe Pump

  2. Content of presentation 1). Centrifugal (CP) versus Positive Displacment (PD) 2). Technical details of the Megator Rotary Lobe Pump Design 3). Applications 4). Competition from other PD´s 5). Summary and questions

  3. 1). Centrifugal versus Positive Displacment (PD) When to use PD? • High and/or changing viscosity • Flow and head must be independant • High pressure requirement • Liquid is shear sensitive

  4. 2). Technical details of the Megator Rotary Lobe Pump • Rotary Lobe Pump • Best at Medium to High viscosity applications (max. 1,000,000 cP or cSt) • Low to high pressure (max. 435 psi) • Low to high temps (max. 842 F/ 450 C) • Abrasive, corrosive and shear sensitive fluids. • Designed for drive by a flexible coupling. • 1-10 Inch Pipe Diameters MATERIAL APPROXIMATE VISCOSITY in cP Water @ 70 F 1 Blood or Kerosene 10 Anti-Freeze or Ethylene Glycol 15 Motor Oil SAE10 or Mazola Corn Oil 50 - 100 Motor Oil SAE30 or Maple Syrup 150 - 200 Motor Oil SAE40 or Castor Oil 250 - 500 Motor Oil SAE60 or Glycerin 1,000 - 2,000 Karo Corn Syrup or Honey 2,000 - 3,000 Blackstrap Molasses 5,000 - 10,000 Hershey Chocolate Syrup 10,000 - 25,000 Heinz Ketchup or French's Mustard 50,000 - 70,000 Tomato Paste or Peanut Butter 150,000 - 250,000 Crisco Shortening or Lard 1,000,000 - 2,000,000 Caulking Compound 5,000,000 - 10,000,000 Window Putty 100,000,000

  5. 2). Technical details on the Megator Rotary Lobe Pump • Handles solids • Handles high viscosity fluids • Handles corrosive fluids • Handles shear sensitive fluids • Can tolerate dry-running • Good suction and limited pressure pulsations

  6. 2). Technical details of the Megator Rotary Lobe Pump Shafts are carried by bearings on both sides of the gear wheels. Rotor: 2 or 3 vane, ”gear”, bucket shape – standard lobe shape, or peanut lobe shape. Lipseal as standard, running on TC coated shafts. Optional mech. seals or packed gland. As standard running in a seal barrier fluid: dry-running possible and seal life is prolonged. Casing: - Cast Iron, 304 SS, 316 SS, Bronze, Titanium & Hastelloy - Double O-ring gasketed casing. - Flanges can be DIN or ANSI

  7. 2). Technical details of the Megator Rotary Lobe Pump 2 Vane Rotors (standard) Various Lobe Shapes Available Rotor Construction: - Carbon Steel - 304 SS - 316 SS - Bronze - Titanium - Hastelloy -Teflon - Nylon - PVDF - Various elastomers

  8. 2). Technical details of th Megator Rotary Lobe Pump Primary seal mechanical (Standard inboard) Lip seals (Standard outboard) Gland/Packing seal (Optional inboard) Secondary seal mechanical (Optional outboard)

  9. 2). Technical details of the Megator Rotary Lobe Pump Mechanical + Lip seal Standard ”flat” front cover, low pressure Megator Standard V-Type

  10. 2). Technical details of the Megator Rotary Lobe Pump Elongated shafts, supported by a front cover mounted bushing Ketron bushings, max. 842 F or 250 degrees C Megator Multi V-Type

  11. 2). Technical details of the Megator Rotary Lobe Pump Tri-Clamp Sanitary Fittings Megator Sanitary V-Type

  12. 3). Applications • Waste Water Treatment: • Primary Sludges. • Digested Sludges. • High DS sludge (after centrifuge). • Bio-Gas Plants: • Manure. • Fish Offal. • Sludges. • Pulp- & Paper: • Paper Mill Sludge. • Starch. • Paper coatings. • Petrochemical Industry: • Crude Oil. • Waste Oil. • Drilling Mud. • Food industry (non-sanitary): • Potato pulp. • Slaugther house offal (fat). • Gelatine. • Fish Processing / Farming: • Stick Water. • Press Water. • Concentrate.

  13. 3). Applications. • Crude oil (Waste oil). • Used to create natural gas, naphta, asphalt, kerosene etc. • Forms the raw material for many chemicals • Viscosity from 8 cSt to several thousands cSt • Often contains particles, often very abrasive • The pump to use: • Megator Rotary Lobe in cast iron or steel/stainless steel • Steel or rubber rotors • Low speed at higher viscosities and impurities • Hardened casing can be offered if very abrasive • Heating jackets may be required, or electrical heating mats/tracing

  14. 3). Applications • Bitumen with filler (pitch, tar, petroleum asphalt) • Used for roads, roof tar, insulation, fungisides etc. • Viscosity from 100 – 5,000 cSt, depending on temperature • Filler is often ground stone • Pumpable temperature 150 – 205 degrees C • The pump to use: • Megator Rotary Lobe cast iron • Steel rotors, heating jackets/tracing • Stuffing box or lip seals • If with filler, hardened casing/wear plates should be used

  15. 3). Applications • Molten suplhur. • Used in the pulp- and paper industry, to produce sulphuric acid, vulcanizing rubber etc. • Density high, 1.8. Must be considered in regards to calculation of Pdiff./power consumption • Very temperature sensitive, must be pumped at the correct temperature. Typically between 121 and 154 degrees C. Here viscosity is app. 6 – 9 cp • The pump to use: • Megator Rotary Lobe cast iron • Steel rotors, heatning jackets/tracing • Stuffing box or lip seals • Pump life will allways be relatively short

  16. 3). Applications • Paint. • Viscosity from 20 cSt and upwards • Pigments can be very abrasive and sedimenting • Can be shear sensitive due to a latex content • Contains thinner or water • The pump to use: • Megator Rotary Lobe cast iron/stainless steel • Lip seals at higher visc. and sticky paints • Elastomers must be able to handle thinners • Power adequate for starting up with sedimenting pigments in the pump • Able to run at high speed to flush pump

  17. 3). Applications • Zinc oxide/Iron oxide (Zinc oxide coating, zinc oxide slurry). • Viscosity from 44 cSt to 220 cSt • Used as pigment in paints, acellerator-activator in rubber, pharma etc. • Highly abrasive • Sediments • The pump to use: • Megator Rotary Lobe cast iron • Low speed and hardened casing • Steel rotors • TC/TC faced mech.seals or lip seals

  18. 3). Applications • Adhesives (Glue, cement, paste). • Wide range of viscosities • Basic components are latex, liquid rubber, starch etc. • Shear sensitive and abrasive • May solidify due to heat generation in the pump • The pump to use: • Megator Rotary Lobe cast iron/stainless steel • Elastomers must be able to handle the solvents used in the adhesive • Power adequate for starting up with sedimentation / ”sticking” in the pump

  19. 3). Applications • Molasses. • Viscosity from 200 cSt up to approximately 22,000 cSt • Used for animal food, human food, butanol and acetone • Many different types of molasses, with huge variations in properties • The pump to use: • Megator Rotary Lobe stainless steel • Lip seals should be used • Power adequate for starting up with semi-solidified molasses in the pump

  20. 3). Applications • Chocolate (cocoa butter, coating chocolate e.t.c.) • Viscosity from 20 cSt and higher • Can be highly shear sensitive • Heat generation can that it caramelize • Even minute traces of water will ruin the batch • The pump to use: • Megator Rotary Lobe cast iron/ stainless steel • Lip seals with lantern ring for cocao butter / food grade grease lubrication • Low speed • High temperature tolerances, to minimize frictional heat between casing and rotors

  21. 3). Applications • Fat (Cold fat, ground fat). • Viscosity varies, but can be as high as 22,000 cSt • May contain bone splinters, which are abrasive • Used for animal food, or are simply destructed if it comes from sick animals at slaughter houses • Beef fat is harder to pump than pork fat • The pump to use: • Megator Rotary Lobe cast iron/stainless steel • Lip seals at higher viscosities, at lower viscosities TC/TC mech. seals are acceptable • Use of hardened casing extends life • Sometimes heating may be required

  22. 3). Applications • Starch & Paper coating (Pulp- and paper industry) • Viscosity from 20 cSt and higher • Pigments can be very abrasive and sedimenting • Pumpable temperature 150 – 205 degrees C • Higher temps. can mean that it becomes solid • The pump to use: • Megator Rotary Lobe cast iron/stainless steel • Lip seals at higher viscosities should be used • Power adequate for starting as these liquids tend to settle

  23. 3). Applications • Sludge from waste water treatment (WWT). • Viscosity varying depending on the specific sludge • Can be highly abrasive • Can be shear sensitive • The pump to use: • Megator Rotary Lobe cast iron, rubber rotors. • Lip seals at higher viscosities should be used. • At high pressures (high DS), use • front-end bushings • Hardened casing and wear plates • extends life span • At high DS, use in-feed screw

  24. 4). Competition from other PD´s • Rotary Lobe Pumps / Circumferential Piston Pumps. • Brands (Rubber): Vogelsang, Börger, Bellin, AGM • Brands (Steel): Jabsco, SSP (Alfa Laval), Johnson (STORK), Inoxpa, POMAC, Viking, Waukesha etc. • Megator Rotary Lobe sales arguments: • Both metal and plastic/rubber rotors • Both industrial and sanitary design • High pressure • Seal fluid chamber, to give true dry-running ability • Integrated speed reducer available

  25. 4). ”Competition” from other PD´s • Internal Gear Pumps. • Brands: Viking, Rotan, Johnson, Varisco, Victor, Daido, Tuthill etc. • Megator Rotary Lobe sales arguments: • Can handle much larger particles • Can withstand dry-running • Much higher pressures: 450 psi compared to 265 psi • No bearing in the product zone • Lower rotor tip speed, due to smaller diameter • Less shearing action • Lower price on high-flow pumps and large stainless steel pumps

  26. 4). ”Competition” from other PD´s • Peristaltic Pumps. • Brands: Watson-Marlow, Bredel, LSM, Finder, Boyser etc. • Megator Rotary Lobe sales arguments: • Can handle harder solids. • Can run continously at high speed. • Higher pressures. • More efficient due the friction less design. • Higher speeds possible, as we dont need to wait for a hose to return to the original shape. • Compact design, even with high-flow pumps.

  27. 4). ”Competition” from other PD´s • Progressive Cavity Pumps. • Brands: MONO, PCM, Netzch, Seepex, Bellin, Wangen, Bornemann etc. • Megator Rotary Lobe sales arguments: • Can dry-run • Can run continously at high speed, due to no friction and good balance. • More efficient due to the frictionless design. • Compact design, even with high-pressure pumps. • Lower LCC due to cheaper spares and quicker maintenance. • Sensible relationship between initial pump purchase price and spare part prices.

  28. 4). ”Competition” from other PD´s • Air Operated Diapraghm Pumps. • Brands: Pumps 2000, Sandpiper, Versa-Matic, ARO, Wilden, Rupp, etc. • Megator Rotary Lobe sales arguments: • Can also be used in Explosion-proof environments. • Less expensiv to operate (electricity) than compressed air • No stalling • Higher pressure • Continous operation

  29. Questions?

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